Media and The American Constitution

In recent months I’ve noticed virulent criticism of media expressed by Republican candidates for president of the United States and echoed by online comments; so everyone knows that few like the media, or Donald Trump; so say online media. Recently
media have referred to Mr. Trump’s willingness to stop accepting new citizens to the U.S.A. unconstitutional which to me means that words in the U.S. constitution prohibit U.S. politicians from imposing limits on anyone not born in the U.S.A. from entering that country. The text of the U.S. constitution is online so that all journalists could consult it to see whether they can say that limiting access to the U.S. A. is unconstitutional or not. Here is all that the U.S. constitution has to say about people entering the United States in Article I

…Section 9. The migration or importation of such persons as any of the states now existing…